| XIE Wenling,LI Yang,GAO Yahui. 2008. First record of Thalassiosira curviseriata Takano (Bacillariophyta) and its bloom in the East China Sea. Acta Oceanologica Sinica, (6):124－132 |
| First record of Thalassiosira curviseriata Takano (Bacillariophyta) and its bloom in the East China Sea |
| First record of Thalassiosira curviseriata Takano (Bacillariophyta) and its bloom in the East China Sea |
| Received:June 25, 2008 Revised:July 22, 2008 |
| DOI： |
| Key words:bloom Thalassiosira curviseriata East China Sea |
| 中文关键词: bloom Thalassiosira curviseriata East China Sea |
| 基金项目:The Major State Basic Research Development Program ("973" Program) of China under contract Nos 2001CB409701 and 2005CB422305; the Special Prophase Project of Fujian Science and Technology Major Program of China under contract No. 2005YZ1024; the National Natural Science Foundation of China under contract Nos 40627001 and 40476055. |
| Author Name | Affiliation | E-mail | | XIE Wenling | Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education, School of Life Sciences, Xiamen University, Xiamen 361005, China | | | LI Yang | Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education, School of Life Sciences, Xiamen University, Xiamen 361005, China | | | GAO Yahui | Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education, School of Life Sciences, Xiamen University, Xiamen 361005, China | gaoyh@xmu.edu.cn |
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| Abstract: |
| A bloom caused by a diatom, Thalassiosira curviseriata Takano (Bacillariophyta), is recorded in the East China Sea for the first time in China during a red tide investigation cruise (MC2005-2) from 27 March to 12 April 2005. This bloom was developed with the competition of Chaetoceros debilis and Skeletonema spp. The highest cell density of T. curviseriata, which has reached 1.27×106 cells/dm3, was found in the surface and middle water layers of Stas ZD, ZB in the East China Sea (27.22°~29.48°N, 121.53°~122.98°E)in early spring in 2005. During the blooming period of T. curviseriata, the population with high cell density was found in the water area with temperature of 10~15℃ and salinity of 29.0~33.5. The percentage of the predominant species, T. curviseriata, has reached 95.8% of total diatom cells at one time in the middle water layer. The morphological characteristics of T. curviseriata, were observed with light microscope (LM) and transmission electronic microscope (TEM). The cells are 5.0~12.6 μm in diameter, connecting each other by mucilaginous thread to form spiral and curved chains. Description and LM and TEM images of T. curviseriata are presented. T. curviseriata is ecologically characterized by eurythermy and euryhalinity, and its population variation is affected mainly by silicate, the ratios of phosphorus to silicon and nitrogen to silicon. |
| 中文摘要: |
| A bloom caused by a diatom, Thalassiosira curviseriata Takano (Bacillariophyta), is recorded in the East China Sea for the first time in China during a red tide investigation cruise (MC2005-2) from 27 March to 12 April 2005. This bloom was developed with the competition of Chaetoceros debilis and Skeletonema spp. The highest cell density of T. curviseriata, which has reached 1.27×106 cells/dm3, was found in the surface and middle water layers of Stas ZD, ZB in the East China Sea (27.22°~29.48°N, 121.53°~122.98°E)in early spring in 2005. During the blooming period of T. curviseriata, the population with high cell density was found in the water area with temperature of 10~15℃ and salinity of 29.0~33.5. The percentage of the predominant species, T. curviseriata, has reached 95.8% of total diatom cells at one time in the middle water layer. The morphological characteristics of T. curviseriata, were observed with light microscope (LM) and transmission electronic microscope (TEM). The cells are 5.0~12.6 μm in diameter, connecting each other by mucilaginous thread to form spiral and curved chains. Description and LM and TEM images of T. curviseriata are presented. T. curviseriata is ecologically characterized by eurythermy and euryhalinity, and its population variation is affected mainly by silicate, the ratios of phosphorus to silicon and nitrogen to silicon. |
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